Which commands are included in the NECC?

The correct answer highlights the commands included in the Naval Expeditionary Combat Command (NECC). The NECC focuses on providing expeditionary capabilities to the Navy, which includes a variety of specialized units.

In this case, the commands listed are significant parts of NECC's mission. The Maritime Expeditionary Security Group (MESG), Construction Readiness Group (CRG), Explosive Ordnance Disposal (EOD), and the Naval Construction Forces, which includes the Seabees, are all essential components of NECC's structure. The Seabees, for instance, are known for their construction and engineering expertise, vital in supporting naval operations.

Other answer choices present commands that do not align as directly with NECC. For example, Special Operations units and Marine Expeditionary Forces (MEF) are more aligned with the broader Marine Corps operations but do not fall directly under the NECC. The NECC specifically integrates surface warfare and combat support capabilities, which is better represented in the correct choice. This alignment reinforces the operational focus of the NECC on amphibious and expeditionary warfare support.